body{
    padding-top: 122px;
}
header{
    position: fixed;
    z-index: 4;
    /* padding-bottom: 122px; */
    top: 0;
    width: 100%;
    background-color: #fff;
    border-bottom: 1px solid #ccc;
}
#banner{
    position: relative;
    z-index: 0;
}
#banner img{
    width: 100%;
}
.navbar{
    height: 122px;
    padding-top: 40px;
    box-sizing: border-box;
}

.logo{
    /* display: inline-block; */
    float: left;
    margin-right: 36px;
}

.navbar-link>li {
    float: left;
    margin-right: 20px;
}
.navbar-link a{
    padding: 16px 13px;
    display: inline-block;
    position: relative;
}
.nav-sub{
    display: none;
    position: absolute;

}
.nav-sub li{
    line-height: 30px;
    font-size: 14px;
    background: #fbfaf8;
}
.nav-sub a{
    height: 31px;
    line-height: 31px;
    padding: 0 17px;
}
.navbar-link>li:hover a.top-column{
    border-bottom: 1px solid #000;
    position: relative;
}
.navbar-link>li:hover a.top-column::after{
    content: "";
    border-bottom: 6px solid #000;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    position: absolute;
    bottom: 0;
    left: calc(50% - 5px);
}
.navbar-link>li:hover ul.nav-sub{
    display: block;
    transition: all 0.6s ease;
}
.nav-sub li:hover a{
    color:#e5256e;
}